dickerson



(No Model.)

I N. DIC-KERSON. PROCESS OF AND APPARATUS FOR MINGLING GASES. No. 552,048.

Patented Dec. 24, 1895.

UNITED STATES PATENT ()FFICE.

EDWVARD DICKER SON, OF NEW YORK, N. Y.

PROCESS OF AND APPARATUS FOR MINGLING GASES.

SPECIFICATION forming part of Letters Patent No. 552,048, dated. December 24, 1895.

Application filed February 6, 1895. Serial No. 537,485. (No model.)

To all whom it may concern.-

Be it known that I, EDWARD N. DICKERSON, of the city, county, and State of New York, have invented a new and useful Improvement in Processes of and Apparatus for Mingling Two Gases Under Pressure, of which the following is a full, true, and exact descripmingling air and acetylene under pressure.

. For the proper burning of acetylene in ordinary burners it is important that the acetyf'lene should be mingled with air, either in equal proportions or in proportions varying I from forty to fifty per cent. of air and sixty fi o fifty per cent. of acetylene, though, of

course, other proportions may be utilized.

For illustration, in this application I refer to the mingling of equal quantities of air and acetylene.

When acetylene gas is generated from calcium carbide and water it generates pressure varying at normal temperaturesfrom siX hundred to three thousand or four thousand pounds to the square inch, dependent upon the internal temperature of the generator, 7 which pressure can be utilized by my appa ratus in effecting the compression of the air to be mingled with it in a compressed condientering gas.

1 tion.

Another convenient source of acetylene gas ;f is to be obtained from cylinders containing the liquefied gas having at ordinary temperatures a pressure of from six hundred to seven i hundred pounds per square inch. By utilizing the pressure of the escaping acetylene from either of these sources I compress the air to the desired pressure. This I may do if low pressures only are desiredsay thirty pounds to the square inch above zeroby, in the first place, filling a chamber with air and then allowing an equal volume of acetylene under pressure to enter, thereby compressing the air in the cylinder and mingling it with the My apparatus is, however, es-

pecially designed for higher pressuressay one hundred and fifty pounds to the square inch above the atmospherewhen the tanks containing the compressed gas become useful for transportation on vehicles or similar purposes. They can, for instance, replace the tanks now utilized in the Pintsch gas system.

My invention will be readily understood from the accompany drawing, which is a diagrainatic plan of the arrangement of my apparatus. The apparatus, however, is not intended to be shown in detail, being of wellknown forms.

A represents a vessel containing acetylene under sufficient pressure to operate the apparatus, as, for instance, a vessel containing liquefied acetylene, or a vessel in which water and calcium carbide being broughtin contact the necessary pressure is established.

The pressure of the gas in chamber A is carried by pipe B having cook 7a to motor 0 operating air-compressor M. The gas, having done its work in motor C,is expanded and very cold. Pressure can be restored to this gas and the cold can be utilized by passing it through heating-coil D, which may be placed in brine to absorb the cold to be subsequently utilized, or it may be filledwith flowing water, thereby adding pressure, if required, to the escaping gas from the motor 0. 7 Whether such warming-coil is required depends upon the pressure desired in the transportationcylinders L L. Escaping from the coil D; the gas passes by pipe E to receiver G, which should be of sufficient capacity to retain an excess of gas until the same is required for the transportation cylinders. from air-compressor M by pipe R passes through cock 9 to pipe S, communicating with air-receiver N. In case the power of the expanding acetylene from chamber Ais not sufficent to compress the air to the requisite pressure an additional supply of air may be carried to the receiver N from air-compressor O by pipe P through cock h.

It is obvious that in place of air any other gas may be compressed by the compressors M O, to be afterward mingled with the acetylene.

In order to charge the shipping-cylinders L L, I proceed, as follows: In the first place, I fill the chamber L With the requisite airpressure from the air-receiver N by opening The air passing simultaneously filling.

cocks a and .6, cocks b, c and d being closed Having admitted, for instance, seventy-five pounds of air'to the cylinder L, as shown by r the gage, the cock to is closed and the cock cl opened, when the acetylene compresses the air in the cylinder L by its own pressure from the chamber G, which must have a pressure in excess of one hundred and fifty pounds, if that is the desired pressure in L. If one hundred and fifty pounds pressure be allowed to enter into the cylinder L from the receiver G, substantially equal quantities of air and acetylene will be contained therein. The cylinder L can then be removed for transportation by closing the cooks d and e, and the cylinder L can be similarly charged, while an empty cylinder replaces the cylinder L.

The operation of the cocks will be manifest to any skilled mechanic, and both cylinders by means of the combination shown can be For instance, supposing the cylinder L to contain air delivered to it from the air-receiver N, by closing the cooks a and b and opening the cock 0 the air can be used to fill the cylinder L, while at the same time the air in cylinder L is being compressed by the acetylene from the receiver G by opening the cock d.

It is, of course, apparent that though air and gas may be compressed together, by this means any other gas, such as illuminatinggas, may be substituted for the air and compressed by the pressure of the acetylene.

WVhat I claim as my invention, and desire to secure by Letters Patent, is

1. The process of compressing air and gas together in a chamber, which consists in compressing the air by a motor driven from the generating gas,in causing the said compressed air to enter a cylinder, and in finally further compressing the air and mixing it with gas by admitting the gas which has previou sly passed through the motor which has compressed the air and is still ata higher pressure, than the air, substantially as described.

2. The combination-ofa gas generator A connected with and operating motor cylinder 0, a chamber L, a connection from the exhaust of the motor cylinder 0 to the chamber L, the air compressor M operated by motor C. a connection from the air for supplying th air compressor M, and a connection from th air compressor M to the cylinder L, there enabling the simultaneous compression of a" and gas, substantially as described.

3. The combination ofthe-source of gas u a der high pressure, air compressor C M, gas

chamber G, air chamber N, and the connec tions for leading the compressed air and sub sequently the compressed gas into a chamber L, substantially as described. v

4. The combination of the source of gas under high pressure, air compressor 0 M operated by the gas generated delivered from the source of gas,the gas heater D, the compressed gas chamber G, the compressed air chamber N, and connections shown for leading the compressed air and the compressed gas to chamber L, substantially as described.

5. The combination of the source of gas un-' E. N. DICKERSON. Vitnesses H. COUTANT, ANTHONY GREF. 

